Drawer mechanism for cash-registers.



G. L. NELSON. DRAWER MECHANISM FOR CASH REGISTERS. APPLICATION FILEDJAN.15, 1914.

1,123,353. Patented Jan. 5, 1915.

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DRAWER MECHANISM FOR CASH REGISTERS.

APPLICATION FILED JAN, 15, 1914.

Patented Jan. 5, 1915.

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c. L. NELSDN. DRAWER MECHANISM FOR CASH REGISTERS. APPLICATION FILEDJAN.15,1914.

1,123,353, Patented Jan.5,1915.

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CARL L. NELSON, OF SEATTLE, IVASHINGTON, ASSIGNOB. TO THE NATIONAL CASHREGISTER COMPANY, OF DAYTON, OHIO, A CORPORATION PORATED IN 1966.)

OF OHIO, (INCOR- DRA'WER MECHANISM FOR CASH-REGISTERS.

Specification of Letters Patent.

Patented Jan. 5, 1915.

Original application filed June 10, 1905, Serial No. 284,610. Dividedand this application filed January 15, 1914. Serial No. 812,270.

To all 107mm it may concern:

Be it known that I, CARL L. NELsoN, a citizen of the United States,residing at Seattle, in the county of King and State of Washington, haveinvented certain new and useful Improvements in Drawer Mechanism forCash-Registers, of which I declare the following to be a full, clear,and exact description.

My invention has for its principal objects the improvement andsimplification of cash registers and provision thereof with means foraccomplishing certain new results.

More specifically the objects of the invention include, among otherswhich will appear below, the provision of an automatic drawer-operatedmachine with means for varying the speed of operating movementtransmitted by the drawer during its movement.

All the patentable subject matter disclosed in this application is notclaimed herein however, as this represents one division of the originalapplication filed June 10, 1905, Serial No. 204,610 and is intended toembody claims only to the drawer operating mechanism of the invention.Another divisional application is also being filed in which it isintended to embody the claims to the indicating mechanism of myinvention.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of ref erence indicatecorresponding parts in all the figures.

Figure 1 is embodying the a sectional view of a machine presentinvention. Fig. 2

is a plan of the table on which the machine is supported; Fig. 3 is afragmentary sectional view of the parts shown in Fig. 2.

Fig. 1 is a side elevation partly in section,

of the operating bar with attachments; Fig.

5 is an end elevation of the same; Figs. 6 and 7 are perspective viewsof details.

Table and frame.-The table is provided with a cover 42 (Figs. 1 and 2)which is removable from the table and supports the various parts of theframe or casing.

Drawer operating mechanism-The table is holiow (see Figs. 1 and 3) andis pro-- vided with a drawer 54 which is preferably provided withcompartments 55 and has a plate 56 at the rear.

Above the drawer the table is provided with a plate 57 for supportingpart of the operating mechanism for the drawer (Figs. 2 and 3). Uponthis plate is mounted a lever 58, the latter being pivoted to the plate57 by means of a pin ihis lever is connected, by means of a chain 60 orother flexible connection passing around a pulley 61, with the drawer.This chain is shown as being connected with a hook 62 mounted on abracket 63 mounted upon the plate 56 (Figs. 8 and 7). A spring 6%mounted on the plate 57 normally pulls the lever away from the pulley(31 and constantly exerts a motive force for opening the drawer. At thebeginning of the motion of opening the drawer it is retarded by thebearins of a roller 65 on a short arm 66 of the lever 58 against a camsurface 67 on a bar 68. The purpose of this is to avoid the rapid motionwhich would be given to the drawer by the motor spring 6i, and to permitthe drawer to close with a sharp motion at the end of the stroke. Thebar 68 is connected (see Fig. 2) to a pair of slides (39 movable on theplate 57, and it is normally forced toward the roller 65 by means of amotor spring 70, which although acting to produce motion in the samedirection as the spring 61-, is designed especially for another oflicewhich will be described below. The motion of the bar 68 is kept in astraight line by means of the slides (39, as they are constrained tomove in parallel lines by the end pieces of the frame of the machineagainst which they are placed, and by a. projection 69 (Fig. 2) movingin a slot 57 The plate 57 is provided with a rack 71 (Fig. 2) alongwhich the bracket 63 passes. In order to prevent the drawer from beingpartly opened or closed and the motion stopped without completing it,this bracket is provided with a hanging pawl 72, (Fig. 3). This pawl ispivoted at a point well above its center of gravity, and on the lowerpart is provided with two notches 73 (Fig. 6) having oppositelyextending teeth 74: below them. As the pawl passes over he rack ineither direction it will be forced to the rear with respect to thedirection of motion, and one of the teeth 7i passing along the top ofthe rack will be at all times in a position to engage the rack and stopthe drawer if it is attempted to move it in the other direction. Whenthe end of the rack is reached, however, the pawl is permitted to dropfrom it so as to assume the position shown in Fig. 3, and then uponreversing the motion of the drawer the same conditions are repeated. Theplate 57 is provided with a slot 75 for receiving the pawl and thebracket 63. The bracket 63 is provided (Figs. 3 and 7) with a projection76 extending to the rear, and a projection 77 extending to the side andby which it is guided below the cover-plate 57. The plate 57 has a slot57 through which the projection 77 can be inserted.

From the construction so far described, it will be seen that the openingof the drawer by the operation of the spring 64: causes the bar 08 tomove to the front in Fig. 2 a certain distance, taking with it theslides 69; also that the bracket 63 is simultaneously caused to movewith the drawer throughout the length of the slot 7 5, carrying with itthe pawl 72, the latter passing over the rack 71 and preventing themovement of the drawer in the wrong direction. It will also be seen thatthe drawer is compelled to start to open with a slow motion, and thatafter the start is made the motion will increase, according to thenatural acceleration of speed due to the spring 64, while in closing,the drawer can be forced back against the resistance of the spring, andat the end of the stroke it can easily be moved to its extreme point.

Drawer Zoe/ring and releasing cZevice.In closed position the drawer isintended to be held by the operation of a pin 79 (Fig. 1) passingthrough a slot 80 in the table, and normally dropping by gravity infront of a projection 81 on the drawer. This projection has a slantingsurface 82 at the rear in order to assist in forcing the pin up when thedrawer is closed, and assure that it will reach the top of the inclineand fall behind the projection. This pin therefore automatically locksthe drawer in closed position when it is forced to the end of itsstroke, and it must be displaced before the drawer can be opened. Inorder to accomplish this result the pin extends upwardly some distancefrom the top of the table, and is provided with a guide 83. It is alsoprovided with a passage or notch S l through which passes the end of abar 85 (Figs. 4:, 5 and 7). This bar is provided with a slanting or camsurface 86, which upon being moved to the rear will engage the top ofthe slot 84 and lift the pin. For the purpose of moving this bar it ispivotally connected by a bolt or pin 87 with a bell crank 88, which ispivoted upon a shaft 89 passing through the machine from one end frame53 to the other. This bell-crank is (Figs. 1 and 4) duplicated at thetwo ends of the machine, the two parts of it being connected by anoperating bar 90. This operating bar preferably eX- tends across thefront of the machine so that it will be within easy reach of an operatorat all times. Obviously the depression of the operating bar causes thereciprocation of the bar 85 to the rear, and the engagement of thesurface 86 with the pin 79 so as to raise the latter and allow thedrawer to be opened by the mechanism described.

While the form of mechanism herein shown and described is admirablyadapted to fulfil the objects primarily stated, it is to be understoodthat it is not intended to confine the invention to the one form ofembodiment herein shown and described, as it is susceptible ofembodiment in various forms, all coming within the scope of the claimswhich follow.

what is claimed is 1. In acash register, the combination with a base, ofa cash receptacle therein, alever and controlling spring connected tosaid receptacle to operate same, and a spring pressed camming elementpositioned to retard the first part of the return movement of saidreceptacle and to assist the last part of such movement.

2. In a cash register, the combination with a base, of a cash receptacletherein, a lever and connections for opening said receptacle, a springfor operating said lever, and a spring pressed cam positioned to retardsaid lever during part of the movement and to assist the lever duringanother part of its movement.

3. In a cash register, the combination of a table, a drawer therein,means for opening the drawer, means for holding the drawer in closedposition, said first-named means comprising a lever, connecting meansbetween said lever and drawer, a spring for the lever, and means forretarding the motion of the drawer at the beginning of its stroke; saidlast-named means comprising a slidable member having a cam surfaceadapted to guide and control one arm of said lever.

4. In a cash register, the combination of a movable drawer, a leverconnected with the drawer, resilient means for moving the lever, a barmounted adjacent to said lever and having a cam surface for engaging theshort arm of the lever, resilient means for moving said bar toward theshort arm of the lever, and means for guiding said bar.

5. In a cash register, the combination of a table, a drawer therefor, aplate above the drawer, a lever connected with the drawer and locatedabove said plate, a spring for moving said lever, a roller connectedwith the short arm of the lever, a bar slidingly mounted upon saidplate, a frame having side pieces located above said plate, a pair ofguides connected with said bar and movable along the outer surfaces ofsaid side pieces for guiding the bar, a spring connected with the barfor moving it toward the lever, and means on the bar for retarding themotion of the lever and drawer at the beginning of their strokes.

(5. In a cash register, the combination of a drawer, a bracket rigidlymounted thereon, a flexible connection engaging said bracket, a leverconnected with said flexible connection for moving the drawer, a springfor operating said lever, and means cooperating with said lever forgoverning its movement at difierent portions of the travel of saiddrawer.

7. In a cash register, the combination with a cash safe having a movablepart, of means for retaining said part in position to conceal thecontents of the safe, means for releasing said retaining means, a leverand connection therefrom to said movable part, means for moving saidlever and thereby rendering said safe accessible, and a cam againstwhich one arm of said lever bears to control its motion.

8. in a cash register, the combination with a cash safe having a movablepart, of a lever and connections therefrom to said movable part, meansfor moving said lever to render the safe accessible, and a bar, springoperated but controlled by said lever, and itself serving to control thedifferential movements of the machine.

9. In a cash register, the combination of a movable drawer, a leverconnected with the drawer, resilient means for moving the lever, a barmounted adjacent to said lever and having a cam surface for engaging theshort arm of the lever, resilient means for moving said bar toward theshort arm of the lever, means for guiding said bar, means for holdingthe drawer in closed position, an operating bar, and means connectedwith the operating bar for disengaging the holding means from the drawerwhen the bar is depressed.

10. In a cash register, the combination of a drawer, a key-holdingplate, a rod having means for engaging said plate, a cam on said rodhaving a rounded rear surface and a catch on the front surface, and aprojection adapted to be moved when the drawer is closed to engage saidcatch and oscillate the rod.

11. In a cash register, the combination with a base, of a cashreceptacle therein, a lever and controlling spring therefor for openingsaid receptacle, and a spring pressed camming bar for assisting thefinal increment of return movement of said receptacle.

In testimony whereof I affix my signature in the presence of twowitnesses.

CARL L. NELSON.

Witnesses:

(inoacn H. DowLING, H. McC. BiLLmosLnY.

Copiel 0! this patent may be obtained for five cents each, by addressingthe Commissioner of Eatenta.

Washington. D. G.

